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Finding the Fourth Proportional to 723,102.57, 998,278.97 and 494,004.33

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Solution

The fourth proportional to 723,102.57, 998,278.97 and 494,004.33 is: 681,997.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    723,102.57 : 998,278.97 = 494,004.33 : x
  2. Step 2: Convert to fraction form
    723,102.57/998,278.97 = 494,004.33/x
  3. Step 3: Cross multiply
    723,102.57x = 998,278.97 × 494,004.33
  4. Step 4: Simplify right side
    723,102.57x = 493,154,131,257.92
  5. Step 5: Solve for x
    x = 493,154,131,257.92/723,102.57
  6. Step 6: Final answer
    x = 681,997.48

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Half scale
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Double scale
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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.